And then use the index-utils to find the node (it's a good simple and efficient integration with Lucene).
On 14 Aug 2009, at 16:10, Dan Heaver wrote: > Onur, add a property to each node to hold the surragate key from your > RDBMS... > > Dan > > On 14 Aug 2009, at 15:30, Onur AKTAS <onur.ak...@live.com> wrote: > >> >> Thank you for your response. I'm trying to understand the main >> concept, please correct me if I am wrong. >> >> For example, there are many users of an application and each >> represented as "Node". And each User has a "UserId" in RDBMS. I >> have checked "Node" class and saw that there is a method called as " >> getId() " but I could not see "setId()" for mapping the User in the >> RDBMS to neo4j. >> >> Sample data: (UserId / Friends Ids) >> 1 - [2, 4] >> 2 - [1, 3] >> 3 - [10] >> 4 - [1, 3, 5] >> 5 - [3] >> >> And I need to query " What are the all shortest paths from 1 to 10 >> for max length 4 " >> And results should be, >> >> 1 -> 2 -> 3 -> 10 >> 1 -> 4 -> 3 -> 10 >> * 1 -> 4 -> 5 -> 3 -> 10 (It will not be shown because it exceeds >> the length 4). >> >> You mean that it can be handled with neo4j, but how can I map each >> User in RDBMS, to Nodes by their original Ids? >> >> Thanks. >> >> >> >>> From: neubauer.pe...@gmail.com >>> Date: Wed, 5 Aug 2009 11:16:15 +0200 >>> To: user@lists.neo4j.org >>> Subject: Re: [Neo] neo4j Beginner Question >>> >>> Hi Onur >>> >>> 2009/8/4 Onur AKTAS <onur.ak...@live.com>: >>>> Calculating,"friends of friends", 3rd degree contacts or 4th >>>> degree etc. is not a good idea with RDBMS. In short words, neo4j >>>> fits perfectly for these kinds of jobs? >>> yes, that is the kind of problems Neo4j and Graph Databases are >>> trying >>> to solve in general. Semi-structured data, havy use of relational >>> information between information entities and complex analysis of >>> high >>> depth fast are some of the common use cases for using a graph >>> database. >>> >>>> Do we have a chance to scale neo4j by adding nodes, does it >>>> support distributed processing? Also, can we delete any node in >>>> the graph when we need to delete user or we must create the entire >>>> graph again when we need any updates? Do graph objects have id's >>>> that helps us to find the node quickly? >>> >>> Neo4j atm does not support distributed processing or partitioning >>> the >>> graph. There is high-availability and online-backup being worked on >>> which feels more acute since Neo4j on a single instance scales >>> over 1 >>> Billion primitives, which should be enough for most immediate >>> scenarios. >>> But there are of course ways to achieve a custom partitioning using >>> targeted techniques - but that depends on your use case ... >>> >>> HTH >>> >>> /peter >>> _______________________________________________ >>> Neo mailing list >>> User@lists.neo4j.org >>> https://lists.neo4j.org/mailman/listinfo/user >> >> _________________________________________________________________ >> Anılarınızı istediğiniz herkesle çevrimiçi paylaşın. >> http://www.microsoft.com/turkiye/windows/windowslive/products/photos-share.aspx?tab=1 >> _______________________________________________ >> Neo mailing list >> User@lists.neo4j.org >> https://lists.neo4j.org/mailman/listinfo/user > _______________________________________________ > Neo mailing list > User@lists.neo4j.org > https://lists.neo4j.org/mailman/listinfo/user _______________________________________________ Neo mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
